Freshmeat page: http://freshmeat.net/projects/drupal/
Drupal is a full-featured content management/discussion engine using Apache, PHP, and MySQL developed for drop.org. Its features include discussion forums, Web-based administration, theme support, an open submission queue, content management, a modularized design, PHP sessions, user management with access control and username/profanity/hostname filters, error logging, a public diary module, an affiliate site module, backend/headline generation (RSS/RDF), and much more.
This project has the following developers:
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